People and businesses use transportation service firms every time they ship something with a private company. There are many different types of transportation services companies that specialize in various kinds of freight. Some transportation companies specialize in moving just one kind of freight one way such as a firm that just transports horses with horse trailers. Some transportation services companies use airplanes, ships, trucks and trains to move freight around the country and around the world. Some transportation services companies handle both private and commercial freight. Some shipping companies just do commercial shipping for companies. Some transportation companies offer a wide variety of shipping documentation and logistics services.